Previous Conferences & Workshops

Nov
08
2016

Computer Science/Discrete Mathematics Seminar II

Exact tensor completion via sum of squares
10:30am|S-101

In the matrix completion problem, we have a matrix $M$ where we are only given a small number of its entries and our goal is to fill in the rest of the entries. While this problem is impossible to solve for general matrices, it can be solved if $M$...

Nov
07
2016

Computer Science/Discrete Mathematics Seminar I

Non-unique games over compact groups and orientation estimation in cryo-EM
Amit Singer
11:15am|S-101

Let $G$ be a compact group and let $f_{ij}\in L_2(G)$ be bandlimited functions. We define the Non-Unique Games (NUG) problem as finding $g_1\ldots,g_n\in G$ to minimize $\sum_{i,j=1}^n f_{ij}(g_i g_j^{-1})$. We devise a relaxation of the NUG problem...

Nov
07
2016

Workshop on Homological Mirror Symmetry: Methods and Structures

9:00am

The fall workshop focused on core questions of homological mirror symmetry, and how it interacted with the more general picture of mirror symmetry.

Organizers:

The workshop was organized by Paul Seidel (MIT) and Nick Sheridan (IAS).

Speakers:

Mo...

Nov
04
2016

Members’ Seminar

Counting Galois representations
Frank Calegari
2:00pm|S-101

One of the main ideas that comes up in the proof of Fermat's Last Theorem is a way of "counting" 2-dimensional Galois representations over $\mathbb Q$ with certain prescribed properties. We discuss the problem of counting other types of Galois...

Nov
04
2016

Homological Mirror Symmetry Reading Group

A proof of Gamma conjecture in some cases via mirror symmetry
Hiroshi Iritani
10:45am|West Building Lecture Hall

I will discuss Gamma conjecture and its proof in some examples (such as complete intersections in toric varieties) using mirror symmetry. Specifically, I will talk about the B-model $D$-module associated with a LG model, Dubrovin conjecture, and...